Drupal Views Module Caveat
Drupal's powerful Views module is something I use almost everyday. The Views module allows you to present content in many different ways by sorting and filtering content to suit your specific need.
This time I was building a view for news content on a development site, when I stumbled across an interesting filter. I had already filtered by content type. I wanted news content only. I thought I was done, and was about to click 'Save' when I saw it there. The publish filter. "Hm...that sounds vaguely familiar...." I thought to myself as I added it. The caption said "Filter by whether or not the node is published. This is recommended for most Views!"
Suddenly it struck me that I hadn't filtered out unpublished content from this view, and several others as well. I had felt intuitively that Drupal's access control would handle that for me, but the Views module writes its own queries, thus bypassing Drupal's built-in access control. After pondering these things momentarily, I faintly remembered being warned about this in the past by a Drupal Guru I once knew. Somewhere along the way, I had just forgotten about this filter.
This can present a somewhat insidious snag to a new Drupal developer, because you may create many views before you ever have unpublished content surface unexpectedly.
The moral of the story is this: When you create a view, the first thing you should do is add a "Node:Published=Yes" filter. It is very easy to forget this important filter, so making this a habit is a good idea.
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